Apparatus for dry cooling coke



Dec. 20, 1932. ov PIETTE APPARATUS FOR DRY COOLING COKE A Filed March 14, 1929 @dmv .moco 0000 0000 0000 0.000 0000 f\0000 WOOOO, \OO8 1N VEN TOR.' 0. Pf'ee BY 472W@ 9m L O O O O O O O O A TTORNEYS.

119 produced, this method of coolingof the coke situatedk on the other side of the sidewall. v60

1 5 the cooling is effected in a veryirregular erated from the coke. 0n leavino'theuppelc5 ,2 9 special measures become necessary for rcnwhich it is talren again by a fan which re- .7@ dering its transport possible. n turns it to the lower space of the rst cham- The ob'ect of the present invention is an ber, Y apparatus which Shall iWOCl tllcSe flW- The accompanying drawing illustrates by backs. Y way of example one mode of carrying the 2 According to the present invention,` it has invention into effect. 75

Patented Dec. zo, 1932 s v` l 1,891,836

"UNITED STATES Parar Aor@ f OLIVIER PIETTE, OF BRUSSELS, BELGUlVL- ASSIGNOB. TO 'UlON -CHLMIQUEBTLGE SOCIETE ANONYME, OF BRUSSELS, BELGIUM y.

APPARATUS FOR DRY COOLING COKE a Application filed March 14, 1929, Serial No. 247,077, and in elgnm February 2, w29.v

It has been previously proposed in appa current-which has traversed the layer of coke ratus for regenerating sensible heat from hot situated above the shutter-like plates procoke, to let this coke into the upper part ofa vided at the upper part of the inclined area. shaft which may contain a certain number of Between thel spaces of two adjacent cham- 5 pieces of coke, thus yielding the heat during bers, each ofV the sidewalls is preferably l55 i the progressive fall to an kascending current traversed by an" oblique lopening serving to of non-oxidizing gases which transfer this connectthrough a'channel the upper space heat to a. generator of heat. According to of the lchamber situated on one yside of the the more or less friable nature of the co'ke sidewall, with the lower space ofthe chamber by convection may offer the drawback that A circuit is thus established which malres it those portions of the coke layers which conpossible that "alternatelyopposite directions tain dust, oder a greater resistance tothe are successively given tothe gaseous current passage of gases and under these conditions, acting as a carrier for the heat to be regen- Y manner. It happens that the coke which on space of the last chamber, the gaseous curits descending way down the shaft is surrentpis sent into adust-collecting receptacle rounded by dust, is still very hot at its outand' comes afterwards into Contact 'with the let at the lower part of the shaft, and that heating surface ofthe steam generator, from been found useful tomaintain the method` lfigr l is across-section along the axis of cooling the coke by convection, by means `Gr-H of Figures 3 and e of one of the chamof a continuous current of non-oxidizing bers serving for ccclng the Coke; n gases; each cake of lcoke is, however, cooled v Fig. 2 is a vertical section along the line o separately, means being provided for b rlngld-B of Fig l, i y I J Ilg GlCll PBCQ Of 60k@ it@ COIIELC Wlll il Fig. Sis aninclined sectionmade'alongthe continuous current of gases, which traverses line D of Fig.V vl.v l s l y c several times the coke spread in a sufficiently Fig- 4 is an mneg, Section taken along the f thin layer' ling E F 0f Fgl, and Fig. 5 an enlarged :lo The coke is preferablyspread on an 1n- Section of a demi clined stepped surface with plates arranged in the manner of a shutter or Venturianblind, which forms the floor of several adjacent chambers provided with sidewalls and with roofs made of refractory bricks. Each sidewall of these chambers may eXtenld below the inclined surface, and Vit runs a ong spaces a 1 which serve to regulate the passage of gases gndemavtll Ehl mcllbdbgtl all@ ablfod through the spaces left between the said 0I' @a9 C1 im? 5r ima le WG9@ N COWll LJ shutter-like plates; Underneath the plates Wardly exten-mg Sldevllfa 1S 1S tWO, s fPa'CeS 'l 95 of each chamber, are placed two of these an@ fseplmtehy Suitable Pfltltlons; 0f spaces, the lower space receivingthe gaseous WlllCh the 519,20 4 ls'plad underneath the current below the shutter-like plates prolower'portion ofthe inclined grate, and the 7, vided at the lower part of the inclined area, space 5 is, placed below the upperpartof the The coke tobe cooled is brought by a coke car 1 infront of the chambers 2 which serve for cooling, and have their lowerdoors closed. It is thrownthere, and it spreadsitself on the 90 stepped inclined grate 3 which has pivoted shutterelike plates 17 hinged or pivoted at 19. i

c and the upper space collecting the gaseous grate. Obliquelyfl directed .channelsA conf, 1,00 n

nect the space 5 of one of the chambers to the space 4 of the next chamber. The roofs and side walls are preferably made of refractory brick. The upper door l0 of the chamber 2 being closed, a fan 7 sends through a pipe 8 a. current of non-oxidizing gases such as for example nitrogen or inert products of combustion into the space 4 of the first chamber 2, where this current passes between the shutter-like plates 17 of the inclined grate 3, and sweeps over the surface of the coke pieces which are spread thereon, rising afterwards along the roof 14 of the chamber, and descending through the layer of coke and between the shutter-like plates which cover the space 5 of the same chamber. From the space 5 of the first chamber, the gaseous current passes through the obliquely directed channel 6 into the space 4 of the second chamber 2 and ascends again between the shutterlike plates and through the coke situated in this second chamber, to be directed afteri cent compartment.

e OLIVIER PIETTE.

wards between the roof 14 upon the coke v which covers the shutter-like plates of the space 5 of the same chamber. lVhen leaving the space 5 of the second chamber 2 the gas follows the obliquely directed channel 6 connecting this space 5 to the space 4 Aof the third chamber 2, and after having ascended between the shutter-like plates of this space and through the coke which covers them, it arrives into the lower part of the third chamber, where it is re-directed by the roof 14 'of the chamber upon the coke covering the shutter-lille plates of the space 5 of this chamber. Frcmthe space 5, the heated gas is di rected into the dust collecting receptacle 11, and afterwards to the upper part of the heatving surface of the boiler l2.

cooled gas to the fan 7. When the coke is cooled to the required temperature, it is suiicient to open the lower door 9 of the chamber 2 in order to make it slide on the members serving for its transport.

Iclaim:

At the lower Y part of the boiler, a conduit 13 brings the Y An apparatus for the dry cooling of coke i spread in a thin layer comprising a series of vadjacent compartments, an inclined stepped grate with pivoted shutter-like plates forming the'floors of said compartments, said compartments having sidewalls and roofs of refractory brick, each sidewall extending 'belowthe inclined stepped grate and providing a separate upper and lower space below each compartment, the side walls having channels connecting the upper space of one chamber with the lower space of the subsequent chamber, means for passing a continuous current of 'nonoxidizing gas through each compartment, r'st upwards Vthrough the lower space and the lower part of the layer of coke, then through the upper part of the layerv of coke and'throughthe upper space of the same 

